Finding the Fourth Proportional to 739,967.98, 1,021,155.79 and 400,436.23
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Solution
The fourth proportional to 739,967.98, 1,021,155.79 and 400,436.23 is: 552,601.99
Step by Step Solution
- Step 1: Write the proportion equation
739,967.98 : 1,021,155.79 = 400,436.23 : x - Step 2: Convert to fraction form
739,967.98/1,021,155.79 = 400,436.23/x - Step 3: Cross multiply
739,967.98x = 1,021,155.79 × 400,436.23 - Step 4: Simplify right side
739,967.98x = 408,907,774,790.27 - Step 5: Solve for x
x = 408,907,774,790.27/739,967.98 - Step 6: Final answer
x = 552,601.99
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.